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Montana Field Guide

Montana Field Guides

Skunkbush Sumac - Rhus trilobata
Other Names:  Rhus aromatica


Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

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General Description
Shrub 1–2 m. Herbage glabrate to puberulent, fragrant. Leaves trifoliate; leaflets ovate with rounded lobes; central leaflet the largest, 2–4 cm long. Inflorescence terminal and axillary, globular, hairy-bracteate racemes. Flowers: sepals reddish, ca. 1 mm long; petals yellow, ca. 2 mm long, pubescent below. Drupes subglobose, 5–7 mm wide, crowded on stem tips (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Lesica (2012) treats this species as Rhus aromatica.

Species Range
Present
 


Range Comments
Throughout most of temperate N. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 158

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Grasslands, woodlands, riparian forest; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Ecology
This plant is intolerant to fire. After fire it may take many years to re-colonize.

References
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Citation for data on this website:
Skunkbush Sumac — Rhus trilobata.  Montana Field Guide.  .  Retrieved on , from